RRB NTPC 2021-09-02-2021-1 RRB Question Paper

RRB NTPC 2021 - Graduate Level and Undergraduate Level Question Papers

RRB NTPC 2021-09-02-2021-1 RRB Questions

41.
An Army General wishes to arrange his 40125 soldiers in rows and columns in the form of a square. After arranging them, he found that some of them are left out. How many soldiers are left out?
A.
175
B.
125
C.
200
D.
150
😑 View Answer Rough Work
ANSWER :
B. 125
42.

Simplification of \(\frac{0.2\times0.2+0.02\times0.02-0.4\times0.02}{0.36}\) gives:

A.

2

B.

0.09

C.

3.195

D.

2.199

😑 View Answer Rough Work
ANSWER :

B. 0.09

43.
Which of the following statement(s) is/are true.
1) Every whole number is a natural number.
2) Every integer is a rational number.
3) Every rational number is an integer.
A.
Both, 2 and 3
B.
2
C.
3
D.
1
😑 View Answer Rough Work
ANSWER :
B. 2
44.
The value of cos(sec⁻¹x + cosec⁻¹x), |x| ≥ 1 is:
A.
0
B.
2
C.
±1
D.
1
😑 View Answer Rough Work
ANSWER :
A. 0
45.
How many members are there in the Security Council of the UN as of October 2020?
A.
5 permanent members and 10 non-permanent members
B.
5 permanent members and 5 non-permanent members
C.
5 permanent members only
D.
10 permanent members and 5 non-permanent members
😑 View Answer Rough Work
ANSWER :
A. 5 permanent members and 10 non-permanent members
46.
If X is Y's sister, Z is Y's mother, A is Z's father and B is A's mother, then how is X related to A?
A.
Daughter
B.
Daughter's Daughter
C.
Father's Mother
D.
Mother's Sister
😑 View Answer Rough Work
ANSWER :
B. Daughter's Daughter
47.
Two-fifth of one-fourth of three-seventh of a number is 15. What is the half of that number?
A.
175
B.
300
C.
170
D.
375
😑 View Answer Rough Work
ANSWER :
A. 175
48.
In a five digit number, the digit in the hundred's place is 2 and the digit in the unit's place is twice the digit in the hundred's place. The number has no thousands. The digit in the ten thousand's place is the sum of the digit in the hundred's place and the digit in the unit's place. The digit in the ten's place is the digit in the ten thousand's place minus 1. The number is:
A.
60254
B.
60264
C.
60234
D.
60224
😑 View Answer Rough Work
ANSWER :
A. 60254
49.

A is 50% as efficient as B. C completes half of the task completed by A and B together in a day. If C alone completes the task in 40 days, then A, B and C together can complete the task in:

A.

13 \( \frac{1}{3} \) days

B.

13 days

C.

\( \frac{43}{3} \) days

D.

\( \frac{1}{3} \) days

😑 View Answer Rough Work
ANSWER :

A. 13 \( \frac{1}{3} \) days

50.
A train is moving at a uniform speed of 75 km/h. Find the time required by the train to cover a distance of 250 km.
A.
3 h 5 min
B.
3 h
C.
2 h
D.
3 h 20 min
😑 View Answer Rough Work
ANSWER :
D. 3 h 20 min